E. Solomon and V. Mathew
Arcada University of Applied Sciences, Espoo, Finland
Three-dimensional flow analysis was performed by using COMSOL Multiphysics Chemical Engineering Module for the purpose of analyzing the flow properties and finding out the operating points of a test domain. Using material property table for an exemplary melt of LDPE (Low-Density Polyethylene), the logarithmic viscosity-shear rate graph was plotted and fitted to the 4–constant modified Carreau ...
S. Oukach, M. Elganaoui, B. Pateyron, and H. Hamdi
Laboratoire des Sciences des Procèdes Céramiques et de Traitements de Surface SPCTS, Limoges, France
Laboratoire de Mécanique des Fluides et Energétique LMFE, Marrakech, Morocco
The quality of coatings obtained by means of thermal spraying depends strongly on the mechanism of the interaction between the molten droplets and the surface to be covered. The aim of the present study is to simulate the impact of a droplet onto a substrate, in order to have a good understanding of the dynamics of droplets impact. In this study, the process of droplet spreading is described; the ...
B. Chinè , and M. Monno
Laboratorio MUSP, Macchine Utensili e Sistemi di Produzione, Piacenza, Italy and Instituto Tecnologico de Costa Rica, Cartago, Costa Rica
Politecnico di Milano, Dipartimento di Meccanica, Milano, Italy
Modeling and simulation softwares are very useful tools when we have to analyse and understand the different phenomena occurring during metal foams processing, because several simultaneous physical mechanisms have to be accounted for. In this work we use Comsol Multiphysics 4.2 to model a spherical hydrogen gas bubble expanding in aluminium liquid, initially at rest. The aim of the present ...
M. Quast and N.R. Lalic
Gunytronic GmbH, St Valentin, Germany
The sensor type developed by Gunytronic uses corona discharge for measuring flow rates in exhaust streams of automotives, aircrafts and industrial plants. This paper will present the development of testing equipment used in laboratory for investigating physical relations on corona currents, charged particle transport, the calculation of the collateral electric fields and high potentials. This ...
Comparative Numerical Studies of Scramjet Inlet Performance Using k-? Turbulence Model with Adaptive Grids
V. Gopal, R. Kolluru
BMS College of Engineering, Bangalore, Karnataka, India
Scramjet inlet design remains as a key aspect for hypersonic flight. To assess the inlet design, the performance parameters namely; air-capture ratio, total pressure efficiency, inlet drag coefficient, and kinetic energy efficiency are evaluated and analysed. In the current study comparison of performance parameters is carried out by performing numerical computation of 2-D turbulent flow field ...
Simulation and Optimization of the Speed Flow in COMSOL Multiphysics® during the Suction of the Dust Pump for Granite Polishing Operation
B. Wenga, J. Kouam, A. Djebara, A. Bahloul, V. Songmene
École de Technologie Supérieure, Verdun, Montreal, QC, Canada
Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Montreal, QC, Canada
Polishing is one of the oldest finishing processes. However, exposure to emissions of crystalline silica dust is high. Some toxicological studies have identified this pollutant as responsible for a particular type of lung cancer, silicosis. Operational solutions are needed for reducing near-field emissions of fine and ultrafine dust. Granite dust is emitted at high concentrations during ...
J. Hilgert, L. Hütsch, J. Dos Santos, and N. Huber
GKSS Forschungszentrum GmbH, Geesthacht, Schleswig-Holstein, Germany
This study presents an approach to model the material flow around a bobbin tool for Friction Stir Welding (FSW). In this CFD model the aluminum is treated as a highly viscous non Newtonian shear thinning liquid. The model is formulated in a 3D Eulerian frame. The temperature field and the desired torque acting on the tool are taken from a 3D thermal pseudo mechanical model implemented in ...
On The Purification Of Waste Waters Using Multi-Bore Filters: Simulation Of A Long-Term Filtration Stage
Dipartimento di Matematica U. Dini, Universita' di Firenze, Italy
We present the progress of the simulation activity we are carrying out within the PURIFAST LIFE+ project. We first present the model we formulated to describe the macroscopic effects of the filtration process taking place in a multi-bore filter, focusing on the fouling phenomenon. In membrane-based filters the fouling phenomenon is the major reason of a decreasing filtration efficiency. ...
M. Pal1, S. Kholmatov2 and P. Jönsson2
1Centre-University of Wales, Swansea
2Royal Institute of Technology, Stockholm, Sweden
In this paper a simulation model of a laboratory scaled induction ladle is presented. The simulation model so developed will make it feasible to receive information about the fluid flow phenomenon and thermal heat transfer. In order to perform the numerical simulation of the furnace, physical processes involved are expressed as a coupled-nonlinear system of partial differential equations ...
Department of Energy, Environmental and Building Technology, Karlstad University, Kronoparken, Sweden
Water removal during paper manufacturing is an intensive energy process. The dewatering process generally consists of four stages in which the first three stages, water is removed mechanically through vacuum pulses and pressing.The fourth stage involve thermal drying. The vacuum dewatering process has been considered in this work. A laminar level-set method has been applied in order to capture ...